FIRST EDITION. Jenkins built the prototype of the motion picture projector "now in every picture theatre the world over; developed the spiral-wound paraffined all-paper container; and produced the first photographs by radio, and mechanism for viewing distant scenes by radio" (page 4). In June of 1925 he publicly demonstrated the synchronized transmission of pictures and sound, receiving the U.S. patent for Transmitting Pictures over Wireless at the end of the month.
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